#content {
    text-align: center;
}
#content img{
    margin-top: 5rem;
    width: 7rem;
}
#reaction{
    margin-top: 4rem;
    line-height: 2.5rem;
}
#mes2{
    display: block;
    margin-top: 2rem;
    font-family: 微软雅黑;
    font-size: 1.2rem;
}
#lastmes{
    display: block;
    margin-top: 1rem;
    color: #878787;
}